“And was Miss Sibella with you in the room all the time?”
“Yes—the entire time.”
“Thank you.”
Vance returned to the window, and Heath, who had been watching the doctor belligerently, took his cigar from his mouth and cocked his head at Markham.
“You know, sir, I was just thinking over the Inspector’s suggestion about planting some one in the house to keep an eye on things. How would it be if we got rid of this nurse that’s here now, and put in one of our own women from Headquarters?”
Von Blon looked up with eager approval.
“An excellent plan!” he exclaimed.
“Very well, Sergeant,” agreed Markham. “You attend to it.”
“Your woman can begin to-night,” Von Blon told Heath. “I’ll meet you here whenever you say, and give her instructions. There’s nothing very technical for her to do.”
Heath made a notation in a battered note-book.